Typographical casting-machine.



D. S. KENNEDY.

TYPOGRAPHICAL CASTING MACHINE.

APPLICATION FILEDJUNEZT. 1914.

PatentedJune 8, 1915.

2 SHEETSSHEET l.

l/vim wwao D. sx KENNEDY. TYPOGRAPHICAL CASTING MACHINE.

APPLICATION FILED JUNE 27. 1914.

' Patented June 8, 1915.

2 SHEETS-SHEET 2- EEEEEC a fill a; im=mmms 4 1 l a 0 0 0 z 0 knir lfl liv m Q ends of the passages K and L to shut off the a P about the J is'contro'lled by the respectivev'alve lun-' gers N and 0, arranged to contact wit the flow of gas, or to be removed therefrom to permit the delivery of the required amount. The plungers N and O are each formed with restricted orifices K andL, so that even when the passages Kand L areclosed, a small amount of gas is delivered to the burners in order to supply a constant or pilot flame, in the manner well understood in the art. mounted in suitable bores in the box G and are formed with circular grooves or recesses N and 0. which may be filled with,.plumbago or other suitable substance, to act both as a lubricant and a seal. The plungers N and 'O 'are also provided with springs N and 0 located between the heads thereof and the exterior of the box G, in such manner that they tend to elevate'the plungers and thus to permit the free passage of the gas to the burners. In order to protect the sprin s NPa-nd'O and to exclude dirt, etc. there rom, they are referably surrounded by casings N and 8 mounted 'upon the valve box G. The movement of the valve plungers N and O in the opposite direction, or to their closing position, is effected by the independent controlling levers P and P pivotally mounted at P and with their remote ends resting upon the thermostatic rods Q and Q At, their outer ends, the levers P I vmay be connected to or disconnected from the pot at will, this arrangement thus constitutin a convenient unitary attachment. General y speaking, when the temperature of the metal in'the pot rises, the thermostats Q arid Q expand and shift the levers P and ivot P and through the screwsRand Si depress the valve plungers N and 0, so as proportionately to decrease the supply of fuel to the burners. When the "temperature of the metal drops, the thermostats contract and the springs N and O elevate the valve plungers so asto increase the supply of gas to the burners,

As previously stated, it is generally desirable that the temperature of the mouth B or delivery portion shall be maintained at a level different from that of the main por-- tion of the pot, and that this difference may The plungers N and O are be regulated to any extent that may be required in the particular circumstances. These results I effect by the provision of the screws R and S, which may be adjusted and set to vary the relative positions of the valve plungers N' and O, andthus to controltlie respective supplies of fuel. I As before mentioned, I preferably employ",

separate and distinct thermostatic devices; for each of the'valves, and principallyjor 76 the reason that the relative adjustmen't ofj the parts is thereby simplified and their sired controlling'action rendered more eel' k. tam. However, this result may be also secured by the employment of a single thermo- 80 stat, as illustrated in Fig. 5, wherein the contact screws R and S are mounted at one end of a single lever-P the opposite end of which rests upon the single thermostatic rod Q3, In these circumstances, the relative action of the valves is controlled by the inde-' pendent adjustment of the screws with relation to each other, and their normal shifting is effected by the expansion and contraction of the single thermostat Q in substantially the manner before outlined.

As previously stated, my improvements have been shown only in preferred form and by way of example, and as applied to a specific form of machine.- Obviously, many modifications and alterations therein, and in .their mode of adaptation, will suggest themselves to those skilled in the art, without departure from the scope of the invention.-

Having thus described my invention, its construction and mode. of operation, what I claim and desire to'secure by Letters Patent of the United States, is asfollows':

1. In a typographical casting machine, the combination of a casting pot, a plurality-of heating devices located adjacent different portions of the pot, and automatic means subject to the heat of the metal in the casting pot for controlling each of the plurality of heating devices, said means being adjustable at will to vary the heating effect of one heating device with relation to that of the other. 2. In a typographical casting machine, the combination of a casting pot, a plurality of burners active upon the pot, one located beneath the pot and another located re-' motely from the first men-tioned burner,

fuel-supplying means for the burners, and

ejected, two burners, one located beneath the pot and the other in proximity to the mouth piece thereof, fuel-supplying-means for the 13 burners, and automatic means subject to the heat or" the metal in the casting pot for controlling each of said burners, said means besupply pipe leading to the chamber, and

two branch pipes leading therefrom to the respective burners, together with thermostatic means subject to the heat of the molten metal for operating the valves.

5. In a typographical casting machine, the combination of a casting pct having an interior chamber for the molten metal and a mouth piece through which the molten metal is ejected, two burners, one located beneath the pot and the other in proximity to the mouth piece thereof, fuel supplying means for the burners, and two separate and independent thermostats located in the chamber for the molten metal for controlling the respective burners.

6. In a typographical casting machine, the

combination of a casting pot having a mouth piece through which the molten metal is ejected, two burners, one located. beneath the pot and the other in proximity to the mouth piece thereof, a fuel supply system including two controlling-valves for the burners, separate and independent thermostats disposed within said pot, for operating said valves, and means for adjusting the two valves relatively to their thermostats so as to vary the supply of fuel to the respective burners.

7. In a typographical casting machine, the combination of a casting pot having a mouth piece through which the molten metal is ejected, two burners, one located beneath the pot and the other in proximity to the mouth piece thereof, a fuel supply system including two controlling valves for the burners, two separate and independent thermostats arrang d in the pot, and two independently movable levers for operating the valves from the thermostats. I

In testimony whereof, I have aflixed my signature H1 presence of two witnesses.

DAVID S. KENNEDY.

Witnesses:

M. W'. MOREIIOUSE, Ron'r. C. Vorcr. 

